Experimental studies of cusp stabilization in Keda Mirror with AXisymmetricity(KMAX)  

作　　者：李清 朱光辉 任宝明 应嘉成 杨智达 孙玄 Qing LI;Guanghui ZHU;Baoming REN;Jiacheng YING;Zhida YANGXuan SUN(School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People's Republic of China;College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,People's Republic of China)

机构地区：[1]School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People's Republic of China [2]College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,People's Republic of China

出　　处：《Plasma Science and Technology》2023年第2期20-26,共7页等离子体科学和技术（英文版）

基　　金：the National Key R&D Program of China(No.2017YFE0301802);National Natural Science Foundation of China(No.12175226).

摘　　要：Stabilization of the axisymmetric magnetic mirror relies on the pressure-weighted magnetic field curvature.We report a new experiment by configuring a magnetic cusp structure to stabilize m=1 interchange mode in the KMAX tandem mirror.The cusp configuration is formed by reversing currents in the two side cell coils,and a stronger cusp can lead to a more stable plasma once the null point of the cusp is less than 35–40 cm away from the device axis.The density fluctuations measured by four axial Langmuir probes are mitigated by 70%–80%.The stabilization effect is consistent with the prediction of a theoretical calculation.

关 键 词：tandem mirror interchange mode density fluctuations cusp stabilization 

分 类 号：TL612[核科学技术—核技术及应用]